io.selendroid.standalone.server.model.impl.DefaultPortFinder Maven / Gradle / Ivy
/*
* Copyright 2012-2014 eBay Software Foundation and selendroid committers.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package io.selendroid.standalone.server.model.impl;
import io.selendroid.standalone.server.model.EmulatorPortFinder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class DefaultPortFinder implements EmulatorPortFinder {
private List availablePorts = new ArrayList();
private List portsInUse = new ArrayList();
private Integer minPort;
private Integer maxPort;
public DefaultPortFinder(Integer minPort, Integer maxPort) {
this.minPort = minPort;
this.maxPort = maxPort;
for (int i = minPort; i <= maxPort; i++) {
if (isEvenNumber(i)) {
availablePorts.add(i);
}
}
}
/* (non-Javadoc)
* @see io.selendroid.server.model.impl.EmulatorPortFinder#next()
*/
@Override
public synchronized Integer next() {
if (availablePorts.isEmpty()) {
return null;
}
Collections.sort(availablePorts);
Integer port = availablePorts.get(0);
portsInUse.add(port);
availablePorts.remove(port);
return port;
}
/* (non-Javadoc)
* @see io.selendroid.server.model.impl.EmulatorPortFinder#release(java.lang.Integer)
*/
@Override
public synchronized void release(Integer port) {
if(port != null){
portsInUse.remove(port);
if (port >= minPort && port <= maxPort && isEvenNumber(port)) {
availablePorts.add(port);
}
}
}
private boolean isEvenNumber(Integer port) {
if (port == null) {
return false;
}
return ((port % 2) == 0);
}
}